EP1378312A2 - Méthode et dispositif pour le soudage à l'arc d'éléments du type goujon sur des pièces revêtues et élément type goujon convenant pour la méthode - Google Patents

Méthode et dispositif pour le soudage à l'arc d'éléments du type goujon sur des pièces revêtues et élément type goujon convenant pour la méthode Download PDF

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Publication number
EP1378312A2
EP1378312A2 EP03014922A EP03014922A EP1378312A2 EP 1378312 A2 EP1378312 A2 EP 1378312A2 EP 03014922 A EP03014922 A EP 03014922A EP 03014922 A EP03014922 A EP 03014922A EP 1378312 A2 EP1378312 A2 EP 1378312A2
Authority
EP
European Patent Office
Prior art keywords
component
holder
arc
coating
longitudinal axis
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP03014922A
Other languages
German (de)
English (en)
Other versions
EP1378312A3 (fr
Inventor
Klaus Gisbert Dr. Schmitt
Joachim Schneider
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Newfrey LLC
Original Assignee
Newfrey LLC
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Newfrey LLC filed Critical Newfrey LLC
Publication of EP1378312A2 publication Critical patent/EP1378312A2/fr
Publication of EP1378312A3 publication Critical patent/EP1378312A3/fr
Withdrawn legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B37/00—Nuts or like thread-engaging members
    • F16B37/04—Devices for fastening nuts to surfaces, e.g. sheets, plates
    • F16B37/06—Devices for fastening nuts to surfaces, e.g. sheets, plates by means of welding or riveting
    • F16B37/061—Devices for fastening nuts to surfaces, e.g. sheets, plates by means of welding or riveting by means of welding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K11/00—Resistance welding; Severing by resistance heating
    • B23K11/002—Resistance welding; Severing by resistance heating specially adapted for particular articles or work
    • B23K11/004—Welding of a small piece to a large or broad piece
    • B23K11/0046—Welding of a small piece to a large or broad piece the extremity of a small piece being welded to a base, e.g. cooling studs or fins to tubes or plates
    • B23K11/0053—Stud welding, i.e. resistive
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
    • B23K35/02—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by mechanical features, e.g. shape
    • B23K35/0255—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by mechanical features, e.g. shape for use in welding
    • B23K35/0288—Welding studs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K9/00—Arc welding or cutting
    • B23K9/20—Stud welding
    • B23K9/201—Stud welding of the extremity of a small piece on a large basis
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K9/00—Arc welding or cutting
    • B23K9/20—Stud welding
    • B23K9/207—Features related to studs

Definitions

  • the invention relates to a method for arc welding of elements, in particular metal bolts, on coated Components, especially sheet metal, in which an element in a first step relative to the component is moved to the coating of the component for manufacture an electrical contact between the component and the element at least partially break open, the component and the element together in a subsequent step be welded.
  • the invention further relates to an apparatus for arc welding of elements, especially metal bolts, on components, in particular metal sheets, with a Welding head in which a holder for receiving a welded Element is provided with a power supply device for feeding electrical Energy and relative means to move the holder to the component.
  • the invention relates to an element that is special suitable for use with such a method is.
  • US-A-3 340 379 discloses a method and an apparatus for arc welding elements on metal sheets become known, which with a coating, e.g. with a paint.
  • a coating e.g. with a paint.
  • the Elements on the surface facing the component have pointed projections with which the coating is penetrated, a metallic contact between the element and the component manufacture. Then the element and component connected by arc welding.
  • short-time arc welding which also under the term “stud welding” is generally known an element received in a holder in the context of a Welding process first raised relative to the component, a welding arc is formed between the element and the component and then lowered the element again.
  • the technology of stud welding is particularly but not exclusively, used in vehicle technology.
  • bolts can be made with or without Threads, nuts, eyelets and other elements on body panels be welded on.
  • the elements then serve in usually as a holding anchor for attaching, for example Interior equipment on the vehicle body.
  • Such a stud welding can be carried out with the method mentioned at the beginning basically also on coated, e.g. painted body panels.
  • Problematic is the application of the known method, however when the components, e.g. the body panels, very much are thin and thus when the coating breaks open Press with the protrusions of the element with permanent Deformations can be expected.
  • From DE-A-199 25 628 is also a method and Apparatus for stud welding become known in which the component before the actual welding process by short-time arc welding first by an arc is cleaned.
  • This is particularly useful for Steel sheets and aluminum sheets are suitable, which is an organic Have coating or are galvanized. at the coating can be, for example Act wax layer.
  • the known method and the known device are Although suitable for use with components that have a thin coating or galvanizing are provided however not suitable to insulate with a well adhering Coating, e.g. a paint job to become.
  • the invention is therefore based on the object of a method and a device for arc welding of To create elements on coated components, with which the disadvantages mentioned above can be avoided.
  • a device for arc welding of To create elements on coated components with which the disadvantages mentioned above can be avoided.
  • aims to produce durable and qualitative high quality welding of elements with metallic Components are made possible even if these have a low thickness and a dense, insulating coating, e.g. a layer of paint, are provided.
  • particularly suitable elements should be specified for use in such a method become.
  • This task is carried out in a method according to the mentioned type in that the element to its Longitudinal axis is moved oscillating to the coating of the component at least partially break open.
  • This object is also achieved in a device according to the type mentioned in that the holder around its longitudinal axis can be driven to oscillate.
  • the element additionally during the first step in the axial direction oscillating back and forth in relation to the component emotional. This can assist in breaking the coating to make a first electrical contact between the component and the element.
  • Component by means of an overpressure or a vacuum freed of remnants of the coating. That way you can Parts of the coating caused by the oscillating Movement of the element broken up relative to the component are or chipped, either blown away or vacuumed to the component in the area where the later welding between component and element should be cleaned as much as possible.
  • An element that is particularly useful for performing the invention Welding process has a Flange area for welding to the component on the elevations for scratching the coating of the component are provided.
  • the flange area has a ring-shaped projection on the end face the surveys are formed.
  • Such elements can be used for high-quality welding also manufactured on components of particularly low thickness become.
  • this also applies to welding of an element on a component in the area of an opening enables so that in particular an element with an internal thread can be welded onto a component can be subsequently accessible through the opening is.
  • the welding process according to the invention closes preferably to the first step in which the coating of the component is at least partially broken open or scratched up, a second step at which the component is cleaned with an electric arc. In this way, a particularly gentle treatment of the component.
  • the Arcing during the cleaning step through a magnetic field distracted is preferred here aligned so that the arc during the cleaning step on a closed track around the Longitudinal axis of the element revolves. In this way, a Cleaning the component surface, especially in the area in which the subsequent welding preferably with an element that has an annular projection, be carried out in a particularly gentle manner.
  • the arc is in the subsequent Reverse polarity stronger with negative polarity of the element focused on what creates a welded joint is particularly suitable in the subsequent step.
  • the drive of the Holder for generating the oscillatory movement around its Longitudinal axis done magnetically.
  • the holder can do this with a drive lever coupled to a radial portion be that between two opposing coils is movable back and forth. This is a particularly simple one Possibility to generate the oscillating movement around the longitudinal axis of the holder.
  • the holder is with a Eccentric drive to generate the oscillation movement around coupled the longitudinal axis. This way too the oscillation movement around with relatively simple means generate the longitudinal axis.
  • a linear motor is preferably used for driving in the axial direction intended.
  • the can usually anyway used linear motor to move the element relatively to the component also for the generation of an oscillatory movement to support the cleaning of the component of its coating can be used.
  • Fig. 1 is a device for welding metal elements 16 shown extremely schematically on components 18 and designated overall by the number 10.
  • the metal elements 16 could be shown in FIG Case, for example, are bolts that are on a painted Body panels are to be welded on. As The so-called short-time arc welding process is used for this purpose used, which is generally known.
  • the device 10 has a welding head 12, which at use in the vehicle industry usually on one Robot arm 46 is included (see FIG. 2).
  • a holder 14 for receiving a welding element 16 is provided in the Welding head 12 .
  • To holder 14 become elements to be welded from an element feed device 20 supplied for example by means of compressed air.
  • the necessary for short-time arc welding Power is provided by a power supply device 22 provided, which is coupled to a control device is.
  • the holder 14 and thus one to be welded accommodated therein Element 16 is about the longitudinal axis 24 of the holder oscillating back and forth, as if by the double arrow 26 is indicated. Furthermore, the holder 14 is through a suitable drive device in relation to the component 18 not only for the welding process itself back and forth movable, but also before the start of the welding process oscillating back and forth as if through the Double arrow 28 is indicated.
  • the holder 14 is received on the welding head 12, in which a collet 30 for holding welded Elements 16 is provided.
  • the collet 30 is oscillating by means of a drive lever 36 Longitudinal axis 24 of the holder 14 is movable.
  • the Drive lever 36 has a radial section 38 (cf. 3), between two opposite coils 40, 48 can be moved back and forth, as indicated by arrow 26 is.
  • At least the radial section 38 of the drive lever 36 is made of a ferromagnetic material for this purpose educated.
  • the polarity of the coil 40, 48 will periodically switched, for which purpose the direction of a suitable the coils flowing through the coils are reversed becomes.
  • the radial section 38 thus alternates attracted to one coil 40 and to the other coil 48, whereby the drive lever 36 oscillating movements performs.
  • the Drive lever 36a is designed as a rocker arm 38a, the two opposite flat guide surfaces 52, 54, which abut an eccentric 50, so that an eccentric movement into an oscillating movement of the drive lever 36a is implemented.
  • FIG. 2 there is also another in the area of the holder 14 Gas line 32 is provided next to one to be welded Element 16 in the area of its head or Flange area 17 opens out with an opening 34.
  • the drive mechanism for the oscillating drive 38, 40 or 38a, 50, 52, 54 is not shown in FIG Way by means of a linear motor 42 with respect to the component movable back and forth.
  • the linear motor 42 is over a receptacle 44 connected to the robot arm 46 by which the welding head 12 preferably suitably positioned numerically controlled with respect to component 18 can be.
  • the element feed device 20 is turned on Element 16 in the collet 30 of the holder 14, for example supplied by compressed air.
  • the element 16 can for example, have the shape according to FIGS. 5 and 6. According to this, the element 16 faces the component 18 Side on a flange 17 on the component side an annular projection 56 is provided, so that overall a pot-shaped shape of the Flange area 17 results.
  • the element in question is 16 rotationally symmetrical, as by the axis of symmetry or longitudinal axis 25 is indicated. In the later Inclusion of the element 16 in the collet 30 falls Longitudinal axis 25 of the element 16 with the longitudinal axis 24 of the Holder 14 or the collet 30 together.
  • element 16 is first starting from an electrical contact according to FIG. 8 by using positive polarity of element 16 and negative Polarity of the component ignited an arc the element 16 is first raised, as by the path s is indicated. This creates an arc through the one still adhering to the surface of the component 18 Coating 68 is evaporated so that the component surface is cleaned. This is also called a "clean flash process" designated. 8 is this cleaning step, where the arc is due to the positive Phase II widens polarity towards the component characterized.
  • the cleaning stream that begins preferably to a size between about 20 and 500 amps regulated. This cleaning strength is preferred also approximately constant for a certain period of time kept as by the course of time during phase II is indicated in FIG. 8.
  • the cleaning current is kept constant, the arc voltage is set according to the distance s and the degree of cleaning. The distance s is on the order of about 3 mm.
  • ⁇ t is preferred between about 15 milliseconds and 120 milliseconds set.
  • phase III becomes the polarity of the voltage between component and element reversed the polarity so that the element is negatively polarized while the component has a positive polarity.
  • the welding current is used to produce a permanent Welding between component and element about a range between 500 and 1500 amps is set.
  • the element to be welded back in contact with the The surface of the component has been used by the Surface removed again (see Fig. 8).
  • the component surface melted so far that a sufficient Tape depth is provided.
  • the welding current to 0 amps will still be a certain one Wait for a period of time so that the weld pool becomes doughy. Only then is the element to be welded into the surface immersed and the welded connection made.
  • the arc is switched off during the cleaning phase controlled or deflected of a magnetic field, as schematically is indicated by Fig. 7.
  • the magnetic field can be, for example, by a coil 58 according to Fig. 9 are generated.
  • the arc 62 is located in the area of the stray field of the coil 58, i.e. in the area the axial end of the coil, so the field lines run, which are indicated in FIG. 7 by the number 60, in this Area approximately in the radial direction.
  • a rotating arc 62 with a diameter from about 3 to 4 mm around on a circular path the longitudinal axis 25 of the element rotates.
  • the direction of the exerted on the arc 62 as a result of Lenz's rule Force is exemplified by arrow 64 in FIG. 7 indicated.
  • the coil 58 is preferably operated with an alternating current, which is between about 8 and 30 volts. used is preferably a current between about 0.1 and 2 amps.
  • the coil 58 is provided relative to the collet 30 to be in the arc for the welding process to bring the axial magnetic field of the coil 58, thereby alignment of the arc on the longitudinal axis 25 of the element results.
  • the component can 18 an opening in the area of the weld to be produced or have a hole 66 around which the protrusion 56 of the element 16 is to be welded on.
  • Element 16 with an annular protruding projection 56 can be used advantageously especially in such cases become.
  • Element 16 is welded to component 18 with an internal thread which are then through the opening 66 used for screwing through hole 66 can be.
  • the element 16 is the most diverse Can have shapes, as exemplified by the Elements 16a, 16b, 16c, 16d, 16e according to FIGS. 10, 11, 12, 13 and 14 is explained.
  • the flange portion 17a includes an annular one Projection 56a, forming a shoulder the outside of the flange portion 17a from this protrudes on the component side. Again are on the face of the annular projection 56a bumps 57a in shape provided by radially running edges.
  • the flange region 17b is flat and in turn has on its component-side end face radially extending elevations 57 in the form of edges.
  • 17c is on the flange region a cylindrical projection 56c is provided on the component side protrudes.
  • the component-side end face of the projection 56c is divided into four quadrants. In each Quadrants are tangent parallel to each other Elevations 57c in the form of protruding edges.
  • the element 16d has one square flange area 17d, on the component side Frontal elevations 57d are formed in the form of edges.
  • the element 16e has one octahedral flange area 17e on whose component-side end face in turn extends radially Elevations 57e are formed in the form of protruding edges are.
  • Escaping gas can also use a vacuum to remove remnants of coating 68 from the component surface to remove.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Plasma & Fusion (AREA)
  • General Engineering & Computer Science (AREA)
  • Arc Welding In General (AREA)
  • Butt Welding And Welding Of Specific Article (AREA)
  • Arc Welding Control (AREA)
EP03014922A 2002-07-04 2003-07-01 Méthode et dispositif pour le soudage à l'arc d'éléments du type goujon sur des pièces revêtues et élément type goujon convenant pour la méthode Withdrawn EP1378312A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10230846A DE10230846A1 (de) 2002-07-04 2002-07-04 Verfahren und Vorrichtung zum Lichtbogenschweißen von Elementen auf beschichtete Bauteile
DE10230846 2002-07-04

Publications (2)

Publication Number Publication Date
EP1378312A2 true EP1378312A2 (fr) 2004-01-07
EP1378312A3 EP1378312A3 (fr) 2004-03-17

Family

ID=29719509

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03014922A Withdrawn EP1378312A3 (fr) 2002-07-04 2003-07-01 Méthode et dispositif pour le soudage à l'arc d'éléments du type goujon sur des pièces revêtues et élément type goujon convenant pour la méthode

Country Status (4)

Country Link
US (1) US20050072765A1 (fr)
EP (1) EP1378312A3 (fr)
JP (1) JP2004082217A (fr)
DE (1) DE10230846A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2138261A1 (fr) * 2008-06-27 2009-12-30 Sabatier S.A.S. Soudage de cabochons métalliques sur une paroi métallique ayant un revêtement non conducteur de l'électricité
WO2014019848A3 (fr) * 2012-08-01 2014-03-27 Newfrey Llc Procédé et appareil de réunion de goujons
DE102020211579A1 (de) 2020-09-16 2022-03-17 Volkswagen Aktiengesellschaft Schweißbolzen und Verfahren zu dessen Fixierung auf einem beschichteten Blech
WO2026042114A1 (fr) * 2024-08-20 2026-02-26 Idea Prototipi S.R.L. Cellule de travail pour soudage

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10333415A1 (de) * 2003-07-17 2005-02-03 Newfrey Llc, Newark Fügevorrichtung
DE102004056021A1 (de) * 2004-11-16 2006-06-01 Newfrey Llc, Newark Verfahren und Vorrichtung zum Kurzzeit-Lichtbogenschweißen
DE102006039842B4 (de) * 2005-08-27 2009-04-09 Ford Global Technologies, LLC, Dearborn Verfahren und Vorrichtung zum Verschweißen eines Bauteils mit einem Werkstück nach dem Lichtbogenverfahren unter Schutzgas
DE102006016553B4 (de) * 2006-04-07 2008-02-14 Heinz Soyer Bolzenschweisstechnik Gmbh Verfahren und System zum Lichtbogenbolzenschweißen und Schweißbolzen
JP2009150497A (ja) * 2007-12-21 2009-07-09 Nippon Pop Rivets & Fasteners Ltd 溶接スタッド
DE102011113308A1 (de) * 2011-09-08 2013-03-14 Newfrey Llc Bolzenschweißverfahren und -vorrichtung
CN114713942B (zh) * 2022-04-19 2024-03-08 上海工程技术大学 电弧负压力约束的钨极氩弧增材制造方法
EP4631669A1 (fr) 2024-04-08 2025-10-15 Newfrey LLC Goujon de raccordement

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2138261A1 (fr) * 2008-06-27 2009-12-30 Sabatier S.A.S. Soudage de cabochons métalliques sur une paroi métallique ayant un revêtement non conducteur de l'électricité
WO2014019848A3 (fr) * 2012-08-01 2014-03-27 Newfrey Llc Procédé et appareil de réunion de goujons
DE102020211579A1 (de) 2020-09-16 2022-03-17 Volkswagen Aktiengesellschaft Schweißbolzen und Verfahren zu dessen Fixierung auf einem beschichteten Blech
WO2026042114A1 (fr) * 2024-08-20 2026-02-26 Idea Prototipi S.R.L. Cellule de travail pour soudage

Also Published As

Publication number Publication date
US20050072765A1 (en) 2005-04-07
JP2004082217A (ja) 2004-03-18
EP1378312A3 (fr) 2004-03-17
DE10230846A1 (de) 2004-01-29

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